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use proc_macro2::TokenStream as TokenStream2;
use quote::quote;
use rtic_syntax::{ast::App, Context};
use crate::{
analyze::Analysis,
check::Extra,
codegen::{local_resources_struct, module, shared_resources_struct},
};
/// Generates support code for `#[idle]` functions
pub fn codegen(
app: &App,
analysis: &Analysis,
extra: &Extra,
) -> (
// mod_app_idle -- the `${idle}Resources` constructor
Vec<TokenStream2>,
// root_idle -- items that must be placed in the root of the crate:
// - the `${idle}Locals` struct
// - the `${idle}Resources` struct
// - the `${idle}` module, which contains types like `${idle}::Context`
Vec<TokenStream2>,
// user_idle
Option<TokenStream2>,
// call_idle
TokenStream2,
) {
if let Some(idle) = &app.idle {
let mut shared_needs_lt = false;
let mut local_needs_lt = false;
let mut mod_app = vec![];
let mut root_idle = vec![];
let name = &idle.name;
if !idle.args.shared_resources.is_empty() {
let (item, constructor) =
shared_resources_struct::codegen(Context::Idle, &mut shared_needs_lt, app);
root_idle.push(item);
mod_app.push(constructor);
}
if !idle.args.local_resources.is_empty() {
let (item, constructor) =
local_resources_struct::codegen(Context::Idle, &mut local_needs_lt, app);
root_idle.push(item);
mod_app.push(constructor);
}
root_idle.push(module::codegen(
Context::Idle,
shared_needs_lt,
local_needs_lt,
app,
analysis,
extra,
));
let idle_doc = " User provided idle function".to_string();
let attrs = &idle.attrs;
let context = &idle.context;
let stmts = &idle.stmts;
let user_idle = Some(quote!(
#(#attrs)*
#[doc = #idle_doc]
#[allow(non_snake_case)]
fn #name(#context: #name::Context) -> ! {
use rtic::Mutex as _;
use rtic::mutex::prelude::*;
#(#stmts)*
}
));
let call_idle = quote!(#name(
#name::Context::new(&rtic::export::Priority::new(0))
));
(mod_app, root_idle, user_idle, call_idle)
} else {
(
vec![],
vec![],
None,
quote!(loop {
rtic::export::nop()
}),
)
}
}
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